{"id":9548,"date":"2011-04-06T03:56:21","date_gmt":"2011-04-05T20:56:21","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/2011\/04\/nghien-cuu-dac-tinh-keo-bam-cua-may-keo-komastu-d65a-8-khi-hoat-dong-tren-dat-lam-nghiep\/"},"modified":"2015-05-19T14:36:06","modified_gmt":"2015-05-19T07:36:06","slug":"nghien-cuu-dac-tinh-keo-bam-cua-may-keo-komastu-d65a-8-khi-hoat-dong-tren-dat-lam-nghiep","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/nghien-cuu-dac-tinh-keo-bam-cua-may-keo-komastu-d65a-8-khi-hoat-dong-tren-dat-lam-nghiep\/","title":{"rendered":"Nghi\u00ean c\u1ee9u \u0111\u1eb7c t\u00ednh k\u00e9o b\u00e1m c\u1ee7a m\u00e1y k\u00e9o KOMASTU D65A-8 khi ho\u1ea1t \u0111\u1ed9ng tr\u00ean \u0111\u1ea5t l\u00e2m nghi\u1ec7p"},"content":{"rendered":"<p><strong>\u0110o\u00e0n V\u0103n Thu<\/strong><\/p>\n<p><em>Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/em><strong><\/strong><\/p>\n<p><strong>T\u00d3M T\u1eaeT<\/strong><\/p>\n<p>Khi canh t\u00e1c tr\u00ean \u0111\u1ea5t l\u00e2m nghi\u1ec7p, LHM ph\u1ea3i th\u1ef1c hi\u1ec7n c\u00e1c c\u00f4ng vi\u1ec7c trong \u0111i\u1ec1u ki\u1ec7n \u0111\u1ecba h\u00ecnh v\u00e0 \u0111\u1ea5t \u0111ai ph\u1ee9c t\u1ea1p, nh\u1eefng y\u1ebfu t\u1ed1 n\u00e0y \u0111\u00e3 l\u00e0m gi\u1ea3m kh\u1ea3 n\u0103ng b\u00e1m, di chuy\u1ec3n c\u1ee7a m\u00e1y k\u00e9o, t\u0103ng chi ph\u00ed n\u0103ng l\u01b0\u1ee3ng v\u00e0 gi\u1ea3m n\u0103ng su\u1ea5t c\u1ee7a LHM. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u0111\u00e3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c c\u00e1c c\u00e1c th\u00f4ng s\u1ed1 v\u00e0 \u0111\u1ea1i l\u01b0\u1ee3ng c\u00f3 li\u00ean quan: P<sub>cx<\/sub>, P<sub>cz<\/sub>, M<sub>bs<\/sub>, n<sub>bs<\/sub>, V, \u03b4\u2026 t\u1eeb \u0111\u00f3 x\u00e2y d\u1ef1ng \u0111\u01b0\u1ee3c \u0111\u1eb7c t\u00ednh k\u00e9o b\u00e1m c\u1ee7a LHM th\u00ed nghi\u1ec7m tr\u00ean \u0111\u1ea5t l\u00e2m nghi\u1ec7p, \u0111\u00e2y l\u00e0 (c\u01a1 s\u1edf) \u0111\u1eb7c t\u00ednh k\u1ef9 thu\u1eadt \u0111\u1ec3 \u0111\u00e1nh gi\u00e1, l\u1ef1a ch\u1ecdn m\u00e1y k\u00e9o \u0111\u01b0a v\u00e0o s\u1eed d\u1ee5ng trong l\u00e2m nghi\u1ec7p. Hi\u1ec7u su\u1ea5t k\u00e9o c\u1ef1c \u0111\u1ea1i \u03b7<sub>k max<\/sub> = 60% t\u1ea1i \u03b4 = 0,27. \u0110\u1eb7c t\u00ednh k\u00e9o b\u00e1m th\u1ef1c nghi\u1ec7m c\u1ee7a m\u00e1y k\u00e9o Komatsu D65-A-8 li\u00ean h\u1ee3p v\u1edbi c\u00e0y ng\u1ea7m l\u00e0m vi\u1ec7c tr\u00ean \u0111\u1ea5t l\u00e2m nghi\u1ec7p l\u00e0 c\u01a1 s\u1edf khoa h\u1ecdc quan tr\u1ecdng \u0111\u1ec3 thi\u1ebft k\u1ebf, ch\u1ebf t\u1ea1o h\u1ec7 th\u1ed1ng m\u00e1y c\u00f4ng t\u00e1c k\u00e8m theo v\u00e0 nghi\u00ean c\u1ee9u t\u1ed1i \u01b0u ch\u1ebf \u0111\u1ed9 l\u00e0m vi\u1ec7c c\u1ee7a c\u00e1c LHM c\u00f3 b\u1ed9 ph\u1eadn di \u0111\u1ed9ng c\u00f9ng lo\u1ea1i.<\/p>\n<p><strong>T\u1eeb kh\u00f3a: <\/strong>\u0110\u1eb7c t\u00ednh k\u00e9o b\u00e1m, B\u1ed9 ph\u1eadn di \u0111\u1ed9ng x\u00edch<strong><\/strong><\/p>\n<p><strong>M\u1ede \u0110\u1ea6U<\/strong><\/p>\n<p>T\u00ednh ch\u1ea5t k\u00e9o c\u1ee7a m\u00e1y k\u00e9o l\u00e0 m\u1ed9t trong nh\u1eefng t\u00ednh n\u0103ng s\u1eed d\u1ee5ng quan tr\u1ecdng bi\u1ec3u th\u1ecb kh\u1ea3 n\u0103ng th\u1ef1c hi\u1ec7n c\u00e1c c\u00f4ng vi\u1ec7c k\u00e9o \u1edf c\u00e1c \u0111i\u1ec1u ki\u1ec7n s\u1eed d\u1ee5ng kh\u00e1c nhau. T\u00ednh n\u0103ng n\u00e0y ph\u1ee5 thu\u1ed9c v\u00e0o kh\u1ea3 n\u0103ng b\u00e1m c\u1ee7a h\u1ec7 th\u1ed1ng di \u0111\u1ed9ng, c\u00f4ng su\u1ea5t c\u1ee7a \u0111\u1ed9ng c\u01a1, s\u1ed1 truy\u1ec1n v\u00e0 s\u1ef1 ph\u00e2n b\u1ed1 s\u1ed1 truy\u1ec1n, l\u1ef1c c\u1ea3n l\u0103n c\u1ee7a m\u00e1y k\u00e9o. Kh\u1ea3 n\u0103ng b\u00e1m v\u00e0 l\u1ef1c c\u1ea3n l\u0103n c\u1ee7a m\u00e1y k\u00e9o ph\u1ee5 thu\u1ed9c v\u00e0o lo\u1ea1i v\u00e0 k\u1ebft c\u1ea5u c\u1ee7a h\u1ec7 th\u1ed1ng di \u0111\u1ed9ng, s\u1ef1 ph\u00e2n b\u1ed1 tr\u1ecdng l\u01b0\u1ee3ng tr\u00ean c\u00e1c b\u00e1nh xe, \u0111\u1ecba h\u00ecnh v\u00e0 t\u00ednh ch\u1ea5t \u0111\u1ea5t \u0111ai (Tatsuro Muro and Jonathan O&#8217;Brien , 2005). Do y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt kh\u00e2u l\u00e0m \u0111\u1ea5t tr\u00ean \u0111\u1ed3i d\u1ed1c \u0111\u00f2i h\u1ecfi c\u00e1c li\u00ean h\u1ee3p m\u00e1y (LHM) ph\u1ea3i chuy\u1ec3n \u0111\u1ed9ng ngang d\u1ed1c theo \u0111\u01b0\u1eddng \u0111\u1ed3ng m\u1ee9c, v\u00ec v\u1eady \u0111\u01b0\u1eddng \u0111\u1eb7c t\u00ednh k\u00e9o c\u1ee7a m\u00e1y k\u00e9o l\u00e0m vi\u1ec7c tr\u00ean d\u1ed1c ngang s\u1ebd l\u00e0 m\u1ed9t trong nh\u1eefng c\u0103n c\u1ee9 quan tr\u1ecdng \u0111\u1ec3 \u0111\u00e1nh gi\u00e1, l\u1ef1a ch\u1ecdn v\u00e0 th\u00e0nh l\u1eadp LHM canh t\u00e1c trong l\u00e2m nghi\u1ec7p.<\/p>\n<p>M\u1eb7c d\u00f9 v\u1eady, t\u00ednh ch\u1ea5t k\u00e9o b\u00e1m c\u1ee7a h\u1ec7 th\u1ed1ng di \u0111\u1ed9ng x\u00edch tr\u00ean \u0111\u1ea5t l\u00e2m nghi\u1ec7p, y\u1ebfu t\u1ed1 h\u00e0ng \u0111\u1ea7u \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1c ch\u1ec9 ti\u00eau n\u0103ng su\u1ea5t v\u00e0 chi ph\u00ed n\u0103ng l\u01b0\u1ee3ng c\u1ee7a LHM l\u00e0m \u0111\u1ea5t ch\u01b0a \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u x\u00e1c \u0111\u1ecbnh \u0111\u1ea7y \u0111\u1ee7.<\/p>\n<p>B\u00e0i b\u00e1o n\u00e0y gi\u1edbi thi\u1ec7u ph\u01b0\u01a1ng ph\u00e1p v\u00e0 k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u th\u1ef1c nghi\u1ec7m x\u00e2y d\u1ef1ng \u0111\u01b0\u1eddng \u0111\u1eb7c t\u00ednh k\u00e9o b\u00e1m c\u1ee7a m\u00e1y k\u00e9o Komatsu D65A-8 li\u00ean h\u1ee3p v\u1edbi c\u00e0y ng\u1ea7m l\u00e0m vi\u1ec7c tr\u00ean \u0111\u1ea5t l\u00e2m nghi\u1ec7p l\u00e0m c\u01a1 s\u1edf thi\u1ebft k\u1ebf, ch\u1ebf t\u1ea1o h\u1ec7 th\u1ed1ng m\u00e1y canh t\u00e1c k\u00e8m theo v\u00e0 nghi\u00ean c\u1ee9u t\u1ed1i \u01b0u ch\u1ebf \u0111\u1ed9 l\u00e0m vi\u1ec7c, n\u00e2ng cao hi\u1ec7u qu\u1ea3 s\u1eed d\u1ee5ng LHM.<\/p>\n<p><em>(T\u1ea1p ch\u00ed Khoa h\u1ecdc L\u00e2m nghi\u1ec7p, s\u1ed1 2 n\u0103m 2010, trang 1293-1301)<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p align=\"justify\">\n<span style=\"font-family: Arial; font-size: 10pt\">B&agrave;i b&aacute;o n&agrave;y gi\u1edbi thi\u1ec7u ph\u01b0\u01a1ng ph&aacute;p v&agrave; k\u1ebft qu\u1ea3 nghi&ecirc;n c\u1ee9u th\u1ef1c nghi\u1ec7m x&acirc;y d\u1ef1ng \u0111\u01b0\u1eddng \u0111\u1eb7c t&iacute;nh k&eacute;o b&aacute;m c\u1ee7a m&aacute;y k&eacute;o Komatsu D65A-8 li&ecirc;n h\u1ee3p v\u1edbi c&agrave;y ng\u1ea7m l&agrave;m vi\u1ec7c tr&ecirc;n \u0111\u1ea5t l&acirc;m nghi\u1ec7p l&agrave;m c\u01a1 s\u1edf thi\u1ebft k\u1ebf, ch\u1ebf t\u1ea1o h\u1ec7 th\u1ed1ng m&aacute;y canh t&aacute;c k&egrave;m theo v&agrave; nghi&ecirc;n c\u1ee9u t\u1ed1i \u01b0u ch\u1ebf \u0111\u1ed9 l&agrave;m vi\u1ec7c, n&acirc;ng cao hi\u1ec7u qu\u1ea3 s\u1eed d\u1ee5ng LHM.<\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[18],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/9548"}],"collection":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/comments?post=9548"}],"version-history":[{"count":2,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/9548\/revisions"}],"predecessor-version":[{"id":15285,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/9548\/revisions\/15285"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=9548"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=9548"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=9548"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}